CN215537341U

CN215537341U - Prefilled syringe cap

Info

Publication number: CN215537341U
Application number: CN202120293124.9U
Authority: CN
Inventors: 华一敏; 朱银华; 张晓晨
Original assignee: JIANGSU HUALAN NEW PHARMACEUTICAL MATERIAL CO Ltd
Current assignee: JIANGSU HUALAN NEW PHARMACEUTICAL MATERIAL CO Ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2022-01-18
Anticipated expiration: 2031-02-02

Abstract

The utility model discloses a pre-encapsulated syringe protective cap which comprises a protective cap body, wherein an anti-adhesion layer for preventing the protective cap from being adhered to an injection end is arranged on the contact surface of the protective cap body and the injection end of a syringe. When the syringe cap is used, the torsion/drawing force when the protective cap is opened can be reduced, the protective cap is prevented from being adhered to the syringe, and the protective cap is not easy to deform and is convenient to use.

Description

Prefilled syringe cap

Technical Field

The utility model relates to a rubber plug protective cap, in particular to a protective cap for a prefilled syringe.

Background

The pre-filled syringe elastomer (rubber) seal comprises a piston and a protective cap inside a sleeve. The protective cap comprises a rubber plug, the rubber plug is arranged in the rigid sleeve, the locking luer adapter is fixed on the conical head of the syringe needle cylinder, the locking luer adapter is in threaded connection with the rigid sleeve, the rubber plug is of a hollow structure, and the rubber plug is matched with the conical head of the syringe needle cylinder to seal the syringe.

After the product is sterilized (ethylene oxide sterilization or moist heat sterilization), the inside of the rubber plug is easily adhered to the outside of the conical head of the syringe barrel, so that although the sealing effect can be achieved, the adhering force is too large, the torsion/pulling force for unscrewing the protective cap is too large during use, and the deformation of the elastomer can be caused, thereby causing inconvenience in use.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to provide a pre-encapsulated syringe protective cap which prevents the protective cap from being adhered to a syringe, is not easy to deform and is convenient to use.

The technical scheme is as follows: the pre-encapsulated syringe protective cap comprises a protective cap body, wherein an anti-adhesion layer for preventing the protective cap from being adhered to an injection end is arranged on the contact surface of the protective cap body and the injection end of the syringe.

Preferably, the anti-sticking layer is a frosted layer. The surface is frosted and treated to make the surface become coarse, and the inside conical head area of contact with the syringe top that protects the cap reduces, reduces and glues the even risk.

Preferably, the release layer has a thickness of less than 0.1 mm.

Preferably, the area of the anti-adhesion layer occupies at least 1/3 of the contact surface area of the cap body and the injection end of the injector.

The method for preparing the pre-filled and sealed syringe protective cap comprises the following steps:

(A) forming a flower biting layer on the surface of the mosaic piece matched with the injection end of the injector by using a flower biting process, wherein the mosaic piece with the flower biting layer formed on the surface and the cavity form a protective cap mold together;

(B) and (D) preparing the pre-filled and sealed syringe protective cap in the protective cap mould obtained in the step (A) by using a molding process.

The device used in the method for preparing the pre-encapsulated syringe protective cap comprises a protective cap mold, wherein the protective cap mold comprises a cavity which is communicated up and down, an inlaying piece which is inserted into the cavity and is used for being matched with the injection end of the syringe, and a biting layer for preventing the protective cap from being adhered to the injection end is arranged on the surface of the inlaying piece.

Preferably, the anti-sticking layer is a frosted layer.

Preferably, the release layer has a thickness of less than 0.1 mm.

Preferably, the knurl layer is a metal layer.

Preferably, the contact surface of the insert piece and the cavity is free of a biting layer. When the insert piece is assembled with the cavity and then the protective cap is produced, the integrity of the protective cap is not affected.

Has the advantages that: compared with the prior art, the utility model has the following outstanding effects: because the contact surface of the protective cap body and the injection end of the injector is provided with the anti-sticking layer, the protective cap can reduce the torsion/drawing force when the protective cap is opened when in use, prevent the protective cap from being stuck with the injector, and is difficult to deform and convenient to use.

Drawings

FIG. 1 is a schematic view of the structure of the protective cap of the present invention;

FIG. 2 is a schematic structural view of a cap mold of the present invention;

FIG. 3 is a schematic view of a mold cavity configuration of the present invention;

FIG. 4 is a schematic view of the construction of the insert of the present invention.

Detailed Description

The technical scheme of the utility model is further explained by combining the drawings in the specification.

As shown in figure 1, the utility model discloses a pre-encapsulated syringe protective cap, which comprises a protective cap body 1, wherein an anti-adhesion layer 2 for preventing the protective cap from being adhered to an injection end is arranged on the contact surface of the protective cap body 1 and the injection end of a syringe. Wherein, the anti-sticking layer 2 is a frosted layer; the thickness of the anti-sticking layer 2 is 0.05mm, and the preferred range is less than 0.1 mm; the texture treatment is the direct treatment of the metal surface, and the material is consistent with the untreated surface. The area of the anti-sticking layer 2 at least occupies 1/3 of the contact surface area of the protective cap body and the injection end of the injector.

(1) forming a flower biting layer on the surface of the mosaic piece matched with the injection end of the injector by using a flower biting process, wherein the mosaic piece with the flower biting layer formed on the surface and the cavity form a protective cap mold together;

(2) and (3) preparing the pre-encapsulated syringe protective cap in the protective cap mould obtained in the step (1) by using a molding process.

2-4, the device for preparing the pre-filled and sealed syringe cap comprises a cap mold, wherein the cap mold comprises a cavity 3 which is communicated up and down, and the cross section of the cavity 3 is shown in FIG. 2; and the insert 4 is inserted into the cavity 3 and is used for matching with the injection end of the injector, the section of the insert 4 is shown in figure 3, and the surface of the insert 4 is provided with an undercut layer 5 for preventing the protective cap from being adhered with the injection end. Wherein, the texture layer 5 is a frosted layer; the thickness of the bitten layer 5 is 0.05mm, preferably less than 0.1 mm; the texture treatment is the direct treatment of the metal surface, and the material is consistent with the untreated surface. Fig. 4 is a schematic sectional view of the cap mold formed by the cavity 2 and the insert 3. The bitten flower layer 5 is a metal layer. The contact surface of the insert 4 and the cavity 3 has no undercut layer. When the insert 4 is assembled with the cavity 3 and then the protective cap is produced, the integrity of the protective cap is not affected.

Claims

1. The utility model provides a embedment syringe helmet in advance, includes helmet body (1), its characterized in that, the contact surface of the injection end of helmet body (1) and syringe is equipped with antiseized layer (2) that are used for preventing the helmet and the injection end adhesion.

2. The pre-filled syringe cap according to claim 1, characterized in that the anti-adhesive layer (2) is a frosted layer.

3. Pre-filled and sealed syringe cap according to claim 1, characterized in that the thickness of the anti-adhesive layer (2) is less than 0.1 mm.

4. Pre-filled and sealed syringe cap according to claim 1, characterized in that the material of the anti-adhesive layer is the same as the material of the cap body (1).

5. Pre-filled and sealed syringe cap according to claim 1, characterized in that the anti-adhesive layer has an area at least 1/3 of the area of the contact surface of the cap body (1) with the injection end of the syringe.